Hearing aid



1. Hearing aid

1.1 : Perspective

1.2 : Front

1.3 : Back

1.4 : Right

1.5 : Left

1.6 : Top

1.7 : Bottom

Reproduction 1.1 is a top, front and right side perspective view of a hearing aid showing our new design; reproduction 1.2 is a front side view thereof; reproduction 1.3 is a rear side view thereof; reproduction 1.4 is a right side view thereof; reproduction 1.5 is a left side view thereof; reproduction 1.6 is a top view thereof; and reproduction 1.7 is a bottom view thereof; in the reproductions, the broken lines depict portions of the hearing aid that form no part of the claimed design. 

CLAIM The ornamental design for a hearing aid, as shown and described. 